Marking Crayon, Actuation Type Not Applicable, Casing Material Not Applicable, Dry Time Less than 30 sec, Glow-in-the-Dark Yes, Grade Scanner Compatibility Lucidyne ColorScan, Hardness Hard, Indoor/Outdoor Usage Indoor/Outdoor, Marker Size Group Mini-Standard, Marking Tip Shape Hex, Maximum Application Temperature 100 Degrees F, Minimum Application Temperature 70 Degrees F, Overall Length 4 3/4 in, Pigment Color Red, Pigment Material Wax, Pigment Maximum Surface Temperature 100 Degrees F